Definitions for "Perforation"
Keywords:  punched, hole, spill, bowel, bore
The act of perforating, or of boring or piercing through.
A hole made by boring or piercing; an aperture.
1.) the rows of holes between stamps that enable easy separation of stamps. The gauge (perforation size) has frequently changed. For example, perf 15 was introduced in 1857, perf 12 in 1861, perf 10 in 1914, and perf 11 in 1917. Other perfs have also been used. "Perf" is a common contraction for perforation. 2.) the holes that were privately added by some private companies to help coil stamps pass through a machine.
Perforation takes place on a binder machine, creating a line of small dotted wholes for the purpose of tearing-off a part of a printed matter (usually straight lines).
A specially designed wheel on the machine puts small slits on a section of the paper, creating a tear line
A piece of rule with sharp teeth used to puncture paper.
A circular opening.
An opening on a tooth or other oral structure.
small opening between two or more elements. {Farinacci et al. 1971
a medical emergency and requires surgery
a serious problem and in most cases would require surgery
Keywords:  apart, score, dotted, pulled, running
Running a dotted score into paper to allow the paper to be pulled apart.
Keywords:  core, another, term
Another term for core.